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Volcanic Activity on Io at the Time of the Ulysses Encounter
Spencer, John R.; Howell, Robert R.; Klassen, David R. +2 more
The population of heavy ions in lo's torus is ultimately derived from lo volcanism. Ground-based infrared observations of lo between October 1991 and March 1992, contemporaneous with the 8 February 1992 Ulysses observations of the lo torus, show that volcanic thermal emission was at the low end of the normal range at all lo longitudes during this …
An Overview of Energetic Particle Measurements in the Jovian Magnetosphere with the EPAC Sensor on Ulysses
Krupp, N.; Woch, J.; Keppler, E. +5 more
Observations of ions and electrons of probable Jovian origin upstream of Jupiter were observed after a corotating interplanetary particle event. During the passage of Ulysses through the Jovian bow shock, magnetopause, and outer magnetosphere, the fluxes of energetic particles were surprisingly low. During the passage through the "middle magnetosp…
Imaging Observations of Jupiter's Sodium Magneto-Nebula During the Ulysses Encounter
Mendillo, Michael; Flynn, Brian; Baumgardner, Jeffrey
Jupiter's great sodium nebula represents the largest visible structure traversed by the Ulysses spacecraft during its encounter with the planet in February 1992. Ground-based imaging conducted on Mount Haleakala, Hawaii, revealed a nebula that extended to at least ±300 Jovian radii (spanning ~50 million kilometers); it was somewhat smaller in scal…
Ulysses Spacecraft Rendezvous with Jupiter
Barbosa, David D.; Kivelson, Margaret G.
Leaving Jupiter, Ulysses Heads for the Sun's South Pole
Appenzeller, Tim